Attachment plug receptacle



zmms

, April 27, 1937. H. K. WACK ATTACHMENT PLUG RECEPTACLE Filed Sept. 19, 1932 55 in accordance with my invention; Fig. 2 is a verthreaded, the binding screw is held in position 55 Patented Apr. 27, 1937 UNITED STATES PATENT OFFICE ATTACHMENT PLUG RECEPTACLE Henry K. Wack, New Bedford, Mass., assignor to John I. Paulding, Inc., New Bedford, Mass, a corporation of Massachusetts Application September 19, 1932, Serial No. 633,770

' 8 Claims. (Cl. 173-330) This invention relates to an attachment plug tical longitudinal sectional view thereof on line receptacle. i 2-2 in Fig. 1; Fig. 3 is a bottom plan view of the One of the important objects of the invention insulating body showing one contact plate mountis the provision of a receptacle of the abovechared therein; Fig. 4 is a vertical cross-sectional 5 acter having a simplicity of construction which view on line 4-4 in Fig. 1; Fig. 5 is a similar View facilitates and expedites the making and assemon line 5-5 in Fig. 3; and Fig. 6 is a side eleva bling of the various parts and thereby effects a tion of a contact plate. material saving in the cost of production. In the drawing, I have Shown y invention as Another object of the invention is the provision embodied in a Single receptacle but it Will be p- 10 of an insulating body and contacts so formed parent that t y be pp d o a duplex reeep- 10 that the contacts may, in the assembling process, tacle by makin suc ha as would be pp rbe pushed edgewise into suitable contact chamen o O e Skilled in e art it iS net y hers in the insulating body and interlocked to the tentien to limit my invention o y Particular said body when in final position, without requirform of receptacle :5 ing other fastening means, Referring to the drawing, I5 designates a one- 5 A further object is the provision of a construcece insulating b yof y su able rm p otion which permits the lead wire terminals to vided on its upper a w a ular p j ctbe connected to the contacts on the sides of the ing bOSS adapted to fit a Circular Opening in receptacle thereby facilitating this operation the Ordinary face P In s tom ace the when the receptacle is being mounted in an outinsulating ody s recessed to form a chamber 20 let box and connected u to 3,.wiring st 29 in the center of which is formed a partition Other objects of the invention will be more spe- This partition in s Central P t o runs cifically set forth and described hereinafter. lengitudihally, Said vinsulating y d s tw In its preferred form, my invention contemn a turned in Opposite directions at right plates a receptacle made up of an insulating body angles to said central Portion and then in pi recessed f it b tt side to form Contact site directions parallel. with and adjacent to. the chambers and contact plates mounted in said Side Walls and are joinedt0 the e s, echambers from the bottom thereof, the insulating epectively; The insulating b y s recessed at 22 body and the contact plates having interlocking Side t the two recesses bemg at portions adapted for holding the Contact plates posite ends of said body and each adjacent an end lccked' to-the insulating bodytwhen in operative wall. The chamber. 20 communicates with each position. Preferably, this is accomplished by of a recesses through Opening 23 in Said providing plate contacts adapted to be. inserted paltltion- Openings 23 Open out the bettem edgewise into the insulating body in planes para1- 9 of Sam body do not to the fun lel with the sides thereof, each contact plate hav- [height P the partltmn leavmg downwardly 3' m a portion adapted to lockv Over a shoulder pro ecting portion 24 of said partition between formed the Side of the insulating b0dy the chamber 20 and each side recess 22 (Fig. 5). way each side, the receptacle is preferably cut Mounted m the chaaber are two Contact away to expose the contact plate and one or more plates each compnsmg j t an elonao binding screws may be mounted in said exposed gatedbody offset, curved portion having all h portion so that lead wires may be attached at the standmg Portlon 26 adapted to Serve as at spllng side of t receptacle contact blade. These plates are preferably This construction has a number of advantages. Stamped from thin Sheet etal and the blade t conduces t implicity of construction by formed at the same time in one operation. Each ducing the number of parts; eliminates all neces- Contact plate is mounted edgewise in the chamsity for providing fastehingmeans such as screws be! 2! adjacent one side wall of the insulating and the like for retaining, the contact plates in body that the Contact blade is Positioned dproper position within the receptacle and it rey b w the d Walls Of he ins lat ng body duces the time and. labor necessary for the assemand the other end of the pl e l es n the recess 50 blingprocess. 22. The latter end of the plate is therefore ex- 50 In the accompanying drawing, showing one posed and this end is provided with an opening form of the invention for the purpose of illus- SI for receiving a binding screw 28 to which may trating the principle thereof, Figure 1 is a top be attached a lead wire. Since the plate is prefplan view of one form of receptacle constructed erably too thin to permit the hole 3! to be by a square nut 30 on the back face of the plate. Each contact plate is held fixed against lateral movement in said chamber 20 between one side wall thereof and one end of the partition 2i.

For locking the contact plates in the insulating body, each of the plates is provided with an inwardly turned portion in the nature of a flange 33 (Fig. 6) adapted to snap over and lock on a shoulder 34 (Fig. 5) formed on the outer face of the portion 24 of said partition in the recessed side of the insulating body above the opening 22. Below this shoulder the side of the insulating body may be bevelled so that when the contact plate is inserted edgewise, the edge of the flange 33 will ride up on the bevelled portion and snap over the shoulder, thereby locking the plate in permanent position without requiring anyother fastening means.

The top face of the insulating body is provided with a pair of jack blade slots 36 opening into the chamber 20 and the face of the boss may be bevelled at 31 to facilitate applying a jack plug to the receptacle.

For supporting the insulating body in a suitable receptacle, such as an outlet box, a yoke 40 is fastened to the bottom face of the insulating body longitudinally thereof by a screw 42 threaded in a hole 44 formed in an enlarged central portion 43 of the partition 2|. A sheet or plate 46 of insulating material is interposed between the yoke and the bottom face of the insulating body. Each end of the yoke may be provided with a hole 41 for receiving means for fastening the yoke in an outlet box and with threaded holes 48 for receiving screws for fastening a face plate over the top of the receptacle.

It will be observed that a receptacle constructed in accordance with my invention is of very simple construction comprising a minimum number of parts, all of which may be assembled rapidly requiring the manipulation of one screw only. In assembling the receptacle, the contact plates with the nuts and binding screws are inserted edgewise in the bottom of the receptacle and pushed inwardly until the flange 33 on each contact plate rides over its respective shoulder 34 and snaps into place thereby locking each contact plate in operative position. The insulating sheet 46 and yoke are then adjusted in position and fastened by the manipulation of the screw 42 which completes the assembling.

In addition to the convenience in assembling, it will be observed that my invention permits the lead wires to be attached to the receptacle at the sides thereof, a position which facilitates the installation of the receptacle in an outlet box and its connection to the wires of the circuit. The contact plate is of extremely simple construction and can be stamped out of ribbon metal in one operation and the locking of those members in the insulating body does not require any screws or other fastening means but is accomplished by merely pushing the contacts into operative position.

It is to be understood that my invention is not to be limited to the construction hereinbefore shown and described since it may be embodied in various other forms all within the scope of the following claims.

What I claim is:

1. In a device of the character described, an insulating body recessed in its lower face to form a chamber having side and end walls and having a central longitudinal partition having its ends offset in opposite directions parallel with and adjacent said side walls and joined to said end walls, said side walls being each recessed adjacent one end thereof to expose the adjacent end of said partition, a shoulder formed on the outer face of each of the exposed ends of said partition, 2. contact plate mounted edgewise in each of said side recesses between one end of said partition and a side wall and having its other end projecting into said chamber and provided with a contact blade, said contact plate having a flange projecting over said shoulder to lock said contact plate in said insulating body without requiring other supporting means the upper face of said insulating body being provided with a pair of jack-blade slots in alignment with said contact blades.

2. In a device of the character described, an insulating body recessed in its lower face to form a chamber having side and end walls and having a central longitudinal partition having its ends offset in opposite directions parallel with and adjacent said side walls and joined to said end walls, said side Walls being each recessed adjacent one end thereof to expose the adjacent end of said partition, a shoulder formed on the outer face of each of the exposed ends of said partition, a contact plate mounted edgewise in each of said side recesses between one end of said partition and an adjacent side wall and having its other end projecting into said chamber and provided with an offset contact blade, said contact plate having a flange projecting over said shoulder to lock said contact plate in said insulating body without requiring other supportin means, said plate having that portion in said recess provided with a binding screw held there n by a backing nut, the upper face of said insulating body being provided with a pair of jack-blade slots in alignment with said contact blades.

3. In a device of the character described, an insulating body recessed in one face to form a chamber, said chamber opening out each side of said body and said openings being in offset relation to each other, a pair of contact plates mounted edgewise in said chamber and each provided with a binding screw registering with one of said side openings, a partition in said chamber having offset end portions for holding said contacts in engagement with the side walls of said body, each of said offset portions having an outer shoulder and each of said contact plates having a flange adapted to lock over one of said shoulders to hold said plate in said chamber without other retaining means, said insulating body having a pair of jack-blade slots in its other face in alignment with said contact plates.

4. In a device of the character described, an insulating body recessed in one face to form a chamber opening out the side of said body, a contact plate mounted edgewise in said chamber and provided with a binding screw registering with said opening, a partition in said chamber having an offset end portion for holding said contact plate in engagement with the side wall of said body, said offset end portion having an outer shoulder and said contact plate having a flange adapted to look over said shoulder to hold said plate in said chamber without other retaining means, said insulating body having a jackbiade slot in its other face in alignment with said contact plate.

5. In a device of the character described, an insulating body recessed in its bottom face to form a chamber, a central partition in said chamber having oppositely offset end portions,

each of said end portions being provided with an outer shoulder and said body being provided with an opening in each side wall in register with the adjacent offset end of said partition, a contact plate mounted edgewise in said chamber between each side wall thereof and an offset end of said partition, each of said contact plates having a portion projecting over said shoulder to lock said plate in said chamber without requiring other supporting means, the face of said body being provided with jack blade slots in alignment with said contact plates.

6. In a device of the character described, an insulating body recessed in its bottom face to form a chamber and having a pair of jack-blade slots in its top face entering said chamber, a central partition in said chamber having oppositely offset end portions, each of said end portions being provided with an outer shoulder and said body being provided with an opening in said side wall in register with the adjacent offset end of said partition, a contact plate mounted edgewise in said chamber between each side wall thereof and an offset end of said partition, each of said contact plates being reversed in relation to the other of them and each having a blade portion in register with one of said slots and a flange projecting over said shoulder to lock said plate in said chamber without requiring other supporting means.

7. In a device of the character described, an insulating body recessed in its bottom face to form a chamber and having a pair of jack-blade slots in its top face entering said chamber, a partition in said chamber having oppositely offset end portions, each of said end portions being provided with an outer shoulder and said body being provided with an opening in each side wall in register with the adjacent oifset end of said partition, a pair of contact plates mounted edgewise in said chamber, said plates being in reversed relation to each other and each being held against lateral movement between a side wall and an offset end of said partition and each of said contact plates having a contact blade in register v with one of said slots and a portion projecting said body being provided with an opening in each side wall in register with the adjacent ofiset end of said partition, a contact plate mounted edgewise in said chamber between each side wall thereof and an offset end of said partition, each of said contact plates having at one end a contact blade in register with one of said slots and at its other end a flange projecting over said shoulder to lock said plate in said chamber without requiring other supporting means, said con tact plates being mounted in reversed relation to each other,

HENRY K. WACK. 

